romney will be more aggressive. >> he will have to be more aggressive than paul ryan. >> yeah. >> two things. i think you will see obama being more aggressive but without the smirking and without -- >> and more dangerous potentially. >> and with the difficulty of the next debate. when ordinary people are asking the question, it's hard to do that and turn to your opponent and attack. >> one of the problems the obama campaign has had had is before denver they were careful not to have the president be aggressive in his attacks because it would have a knock on his numbers. you see that now. there's a lot of independent who are still interested in voting for him because he likes him. if he's very mean and nasty the way biden was this week, that could hurt him more, especially among sub groups like women. >> when we come back, the congressional hearing on libya seeds new light on what happened before and during and after the attack and raises new questions about the administration's response. >> we will get to the bottom of it, and wherever the facts lead us, wherever they lead us, we will